<script setup lang="ts">
import { getHomeBannerAPI } from "@/services/home"
import { getCategoryTopAPI } from '@/services/category'
import type { BannerItem } from "@/types/home"
import { onLoad } from "@dcloudio/uni-app";
import { computed, ref } from "vue";
import type { CategoryTopItem } from "@/types/category";
import PageSkeletion from './components/PageSkeleton.vue'

// 获取轮播图数据
const bannerList = ref<BannerItem[]>([])
const getBannerData = async () => {
  const res = await getHomeBannerAPI(2) // 2商品分类页数据
  bannerList.value = res.result
}

// 获取分类列表数据
const categoryList = ref<CategoryTopItem[]>([])
const activeIndex = ref(0)
const getCategoryTopData = async () => {
  const res = await getCategoryTopAPI()
  categoryList.value = res.result
}

// 是否数据加载完毕
const isFinish = ref(false)
// 页面加载
onLoad(async () => {
  await Promise.all([
    getBannerData(),
    getCategoryTopData()
  ])
  isFinish.value = true
})

// 提取当前二级分类数据
const subCategoryList = computed(() => {
  return categoryList.value[activeIndex.value]?.children || []
})
</script>

<template>
  <view class="viewport" v-if="isFinish">
    <!-- 搜索框 -->
    <view class="search">
      <view class="input">
        <text class="icon-search">女靴</text>
      </view>
    </view>

    <!-- 分类 -->
    <view class="categories">

      <!-- 左侧：一级分类 -->
      <scroll-view scroll-y class="primary">
        <view v-for="(item, index) in categoryList" :key="item.id" class="item"
          :class="{ active: index === activeIndex }" @tap="activeIndex = index">
          {{ item.name }}
        </view>
      </scroll-view>

      <!-- 右侧：二级分类 -->
      <scroll-view scroll-y class="secondary">
        <!-- 焦点图 -->
        <XtxSwiper class="banner" :list="bannerList" />
        <!-- 内容区域 -->
        <view class="panel" v-for="item in subCategoryList" :key="item.id">
          <view class="title">
            <text class="name">{{ item.name }}</text>
            <navigator class="more" hover-class="none">全部</navigator>
          </view>
          <view class="section">
            <navigator v-for="goods in item.goods" :key="goods.id" class="goods" hover-class="none"
              :url="`/pages/goods/goods?id=${goods.id}`">
              <image class="image" :src="goods.picture"></image>
              <view class="name ellipsis">{{ goods.name }}</view>
              <view class="price">
                <text class="symbol">￥</text>
                <text class="number">{{ goods.price }}</text>
              </view>
            </navigator>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
  <PageSkeleton v-else/>
</template>

<style lang="scss">

  .viewport {
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  .search {
    padding: 0 30rpx 20rpx;
    .input {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64rpx;
      padding-left: 26rpx;
      color: #8b8b8b;
      font-size: 28rpx;
      border-radius: 32rpx;
      background-color: #f3f4f4;
    }
  }
  .icon-search {
    &::before {
      margin-right: 10rpx;
    }
  }
  /** 分类 */
  .categories {
    flex: 1;
    min-height: 400rpx;
    display: flex;
  }

  /** 一级分类 */
  .primary {
    overflow: hidden;
    width: 180rpx;
    flex: none;
    background-color: #f6f6f6;
    .item {
      height: 96rpx;
      text-align: center;
      line-height: 96rpx;
      font-size: 26rpx;
      color: #595c63;
      position: relative;
      &::after {
        content: '';
        position: absolute;
        left: 42rpx;
        bottom: 0;
        width: 96rpx;
        border-top: 1rpx solid #e3e4e7;
      }
    }
    .active {
      background-color: #fff;
      &::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        width: 8rpx;
        height: 100%;
        background-color: #27ba9b;
      }
    }
  }
  .primary .item:last-child::after,
  .primary .active::after {
    display: none;
  }

  /** 二级分类 */
  .secondary {
    background-color: #fff;
    .carousel {
      height: 200rpx;
      margin: 0 30rpx 20rpx;
      border-radius: 4rpx;
      overflow: hidden;
    }
    .panel {
      margin: 0 30rpx 0rpx;
    }
    .title {
      height: 60rpx;
      line-height: 60rpx;
      color: #333;
      font-size: 28rpx;
      border-bottom: 1rpx solid #f7f7f7;
      .more {
        float: right;
        padding-left: 20rpx;
        font-size: 24rpx;
        color: #999;
      }
    }
    .more {
      &::after {
        font-family: 'erabbit' !important;
        content: '\e6c2';
      }
    }
    .section {
      width: 100%;
      display: flex;
      flex-wrap: wrap;
      padding: 20rpx 0;
      .goods {
        width: 150rpx;
        margin: 0rpx 30rpx 20rpx 0;
        &:nth-child(3n) {
          margin-right: 0;
        }
        image {
          width: 150rpx;
          height: 150rpx;
        }
        .name {
          padding: 5rpx;
          font-size: 22rpx;
          color: #333;
        }
        .price {
          padding: 5rpx;
          font-size: 5rpx;
          color: #cf4444;
        }
        .number {
          font-size: 24rpx;
          margin-left: 2rpx;
        }
      }
    }
  }
</style>
